Remove xsession desktop file and icon

For me there is almost no reason to start PolytreeWM without session
manager. While this is still possible, I don't want to maintain
additional X session.

Makefile

@@ -65,20 +65,9 @@ install: all
 	sed "s/VERSION/${VERSION}/g" < polytreewm.1 > ${DESTDIR}${MANPREFIX}/man1/polytreewm.1
 	chmod 644 ${DESTDIR}${MANPREFIX}/man1/polytreewm.1
 
-xinstall: install
-	mkdir -p ${DESTDIR}${ICONSPREFIX}
-	cp -f polytreewm.png ${DESTDIR}${ICONSPREFIX}
-	chmod 644 ${DESTDIR}${ICONSPREFIX}/polytreewm.png
-	
-	mkdir -p ${DESTDIR}${XSESSIONSPREFIX}
-	cp -f polytreewm.desktop ${DESTDIR}${XSESSIONSPREFIX}
-	chmod 644 ${DESTDIR}${XSESSIONSPREFIX}/polytreewm.desktop
-
 uninstall:
 	rm -f \
 		${DESTDIR}${PREFIX}/bin/polytreewm \
-		${DESTDIR}${MANPREFIX}/man1/polytreewm.1 \
-		${DESTDIR}${ICONSPREFIX}/polytreewm.png \
-		${DESTDIR}${XSESSIONSPREFIX}/polytreewm.desktop
+		${DESTDIR}${MANPREFIX}/man1/polytreewm.1
 
-.PHONY: all options clean install uninstall xinstall
+.PHONY: all options clean install uninstall

config.mk

@@ -5,13 +5,8 @@ VERSION = 6.2
 
 # paths
 PREFIX = /usr/local
-SYSPREFIX = /usr
-
 MANPREFIX = ${PREFIX}/share/man
 
-ICONSPREFIX = ${SYSPREFIX}/share/icons
-XSESSIONSPREFIX = ${SYSPREFIX}/share/xsessions
-
 X11INC = /usr/X11R6/include
 X11LIB = /usr/X11R6/lib
 # FreeBSD (uncomment)

polytreewm.desktop

@@ -1,7 +0,0 @@
-[Desktop Entry]
-Encoding=UTF-8
-Name=PolytreeWM
-Comment=Polytree tiling window manager
-Exec=polytreewm
-Icon=polytreewm
-Type=XSession